Big 3 upgrade did squat. Deep cycle or 'normal' battery?

Okay so, I recently did the 'big 3' upgrade, and it helped.... barely.

It's not that HUGE of an issue if I'm going over 15mph, but at idle... its hilariously bad. I'm trying to be able to play my system at full power with little to no voltage drop at idle. That is my goal

right now, the system is less that 600 watts and the voltage meter smacks 8 after every bass hit. I will soon be pushing more than 2.5k watts.... and I obviously need to beef up the electrical haha.

I am contemplating purchasing a second battery, and using it only to power the amp. If I do this,

can I hook BOTH of the batteries up to my single alternator?
can I ground both of the batteries to the same 'ground spots'?
Should I get a deep cycle battery, or a 'normal' battery?
^If I get a deep cycle battery, can I hook that to the alternator?

Thank you!
Looking to spend less than $200 for the battery.

Current: 240amp Mechman Alt, Yellowtop in the back, Two SA-6.5s and two tweets in each door powered by an LA-4200, Two Sundown SA-12s in a prefab powered by an SAZ-1500.

Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

If 600 watts is dropping you to 8 you will need more than a bat for 2.5k. Don't let your stuff drop that low it could damage your equipment and your truck

What else are you talking about? a new alt?

And I got the alt tested, its stable at like... 13.75 volts or something

Originally Posted by mylows10

What truck ? If your big 3 isn't installed properly with good grounds. This will happen. Also what amp? Some are very power hungry . And last what size alt and are you using the stock battery ?

Tried to respond earlier, but apparently the one post I made 5 mins ago has to be approved by a mod? Lol what.
Anyways, Its a 96 dakota. I went from 10awg to 2awg and used new 'crimps' or whatever they are called. And I cleaned the connecting spots with a wire brush and cleared away any debris. Its a stock alt... guessing 90 amps? and the battery says 24-DL and 110 reserve. I think it was only a "better" rating from autozone lol

Oh, and the amp is a LA-4200 bridged. And in the future, it will be the LA-4200 and an SAZ-1500

Current: 240amp Mechman Alt, Yellowtop in the back, Two SA-6.5s and two tweets in each door powered by an LA-4200, Two Sundown SA-12s in a prefab powered by an SAZ-1500.

Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

Originally Posted by WhatsAminiTruck

Poopy... okay. And why not? @removing the 10awg wires

and for the quick fix now.... for the 600watt system, what battery setup...?

I've found that occasionally the OEM wires will feed other things aside from what you'd expect. Although if you removed them I imagine you would have noticed if you had to disconnect them from something besides the battery/alt/chassis. But in any case, electrical current will divide itself between the old and the new, obviously the new being larger will handle the majority but the old will still carry some (i.e. you'll see a slight benefit) but it will never hurt. This is why we always recommend the OEM wires be left alone.

As a general rule of thumb I recommend 100A of alt power for every 1kw of amp power. Obviously this has it's limitations especially when you get into higher power systems but it works pretty well for <3kw.

At only 600w there's no reason your stock electrical shouldn't be able to keep up unless you already have a failing electrical component.

Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

If you're dropping to 8V running less than 1k, you've got a combination of existing problems. Battery is crap, you need more charging supply, you may need better connections. Where and with what are you measuring voltage?

Originally Posted by bubbagumper6

The I've found that occasionally the OEM wires will feed other things aside from what you'd expect. Although if you removed them I imagine you would have noticed if you had to disconnect them from something besides the battery/alt/chassis. But in any case, electrical current will divide itself between the old and the new, obviously the new being larger will handle the majority but the old will still carry some (i.e. you'll see a slight benefit) but it will never hurt. This is why we always recommend the OEM wires be left alone.

As a general rule of thumb I recommend 100A of alt power for every 1kw of amp power. Obviously this has it's limitations especially when you get into higher power systems but it works pretty well for <3kw.

At only 600w there's no reason your stock electrical shouldn't be able to keep up unless you already have a failing electrical component.

This whole post, but the bold especially.

Originally Posted by benbenondatrack

stfu lesbo.why are you worried about me so much? you must want to date me ya little cookie monster but i dont even like sweets. your just a cup full of ice, dirt dead nasty azz ice...without the water.

Re: Big 3 upgrade did squat. Deep cycle or 'normal' battery?

Originally Posted by WhatsAminiTruck

Okay so, I recently did the 'big 3' upgrade, and it helped.... barely.

It's not that HUGE of an issue if I'm going over 15mph, but at idle... its hilariously bad. I'm trying to be able to play my system at full power with little to no voltage drop at idle. That is my goal

right now, the system is less that 600 watts and the voltage meter smacks 8 after every bass hit. I will soon be pushing more than 2.5k watts.... and I obviously need to beef up the electrical haha.

I am contemplating purchasing a second battery, and using it only to power the amp. If I do this,

can I hook BOTH of the batteries up to my single alternator?
can I ground both of the batteries to the same 'ground spots'?
Should I get a deep cycle battery, or a 'normal' battery?
^If I get a deep cycle battery, can I hook that to the alternator?

Thank you!
Looking to spend less than $200 for the battery.

Honesty bro in my experience batts are really only my suggestion if the voltage drop is fairly minimal. If you have a real volgate problem i would double check the quality of the big 3 install, mainly check to make sure your ground can not be any better at a different location and that where your ground is has been cleaned of all paint ect ect. Past that i would bypass the battery for now, save up your money you would have spent on that and look at upgrading your alternator. If you have a real voltage problem a battery will not fix it. Only more current will fix your problem, aka an alternator. If you're on a tight budget i would take your car to a starter and alternator shop in your town and see how much more they could upgrade it to instead of buying a brand new one. It'll be about 1/3 to 1/2 the price of a H/O alt.

Also, if you already know you're upgrading to 2.5k in the future you will need an upgraded alternator and maybe even an aux alt anyways. Good luck, if you need any more advice on this feel free to pm me.